Patrick Denzler

  • Education:
    • Dipl. Ing. Electronics, MBA, M.Sc. Production Systems
  • Research Interests:
    • Distributed Systems, Control Theory
    • Emergent System Behaviour
    • Machine Interoperability
    • Philosophy of Science

PhD Student
patrick.denzler@tuwien.ac.at

Research activities:

  • Machine interoperability: OPC UA/DDS Gateway
  • Worst Case Execution Time analysis OPC UA Pub/Sub on the T-CREST platform. 
  • Detection of unexpected emergent system behaviour. 

Host: Vienna University of Technology (TUWIEN)Institute of Computer Aided Automation.

  • Main supervisor: Prof. Wolfgang Kastner, k@auto.tuwien.ac.at (contact person)
  • Co-supervisor: Prof. Gerhard Fohler, fohler@eit.uni-kl.de

Objectives (OPC UA/DDS Gateway):

  1. Increasing the interoperability of machines, allowing larger and more flexible systems and access to data at all levels for data analytics.
  2. Developing a distributed and Service Oriented gateway capable of bridging OPC UA and DDS, the most widespread standards for interoperability.

Expected Results / Status:

  • Definition of an architecture, technology stack, and the mappings necessary to support the exchange of information and functionality between data-centric DDS and object-oriented OPC UA systems. (Finished)
  • Design and implementation of a vendor-neutral and standard bidirectional gateway for information exchange and interoperability between DDS and OPC UA. (In progress 80%)
  • Algorithms necessary to introduce guarantees for scalability, security, and reliability in a Fog environment within the context of middleware applications; their development and evaluation. (In progress 20%)

Planned visits and collaboration:

  • ABB: Evaluate the OPC UA/DDS gateway on the ABB use case.  (On hold due to Corona)

Description:

The aim of this PhD project is to research and implement a distributed and service oriented bi-directional gateway bridging OPC UA and DDS. Specifically, this would involve the definition of an architecture, technology stack, and the mappings necessary to support the exchange of information and functionality between the two. This includes allowing for the execution, discovery, and updating of services, operations, and information in both systems and on the gateway itself. Algorithms necessary to introduce guarantees for scalability, security, and reliability in a fog environment within the context of middleware applications will need to be developed and tested for their impact on hybrid DDS and OPC UA systems.

Relevant publications:

  • Denzler, D.Scheuchenstuhl, D.Ramsauer, and W. Kastner, “Modeling protocol gateways for cyber-physical systems using Architecture Analysis & Design Language (AADL)” submitted to 54th CIRP Conference on Manufacturing Systems.
  • Denzler, D.Ramsauer, and W. Kastner, “Tunnelling and Mirroring Operational Technology protocol data with IP-based middlewares” submitted to ICIT 2021.
  • P. Denzler, J. Ruh, M. Kadar, C. Avasalcai, and W. Kastner, “Towards Consolidating Industrial Use Cases on a Common Fog Computing Platform,” in 2020 25th IEEE International Conference on Emerging Technologies and Factory Automation (ETFA), vol. 1, 2020, pp. 172– 179.

 

  • A. Ismail and W. Kastner, “Surveying the features of industrial SOAs,” 2017 IEEE International Conference on Industrial Technology (ICIT), Toronto, ON, 2017, pp. 1199-1204. doi: 10.1109/ICIT.2017.7915533
  • M. Weyrich and C. Ebert, “Reference Architectures for the Internet of Things,” in IEEE Software, vol. 33, no. 1, pp. 112-116, Jan.-Feb. 2016. doi: 10.1109/MS.2016.200
  • J. Pfrommer, S. Grüner and F. Palm, “Hybrid OPC UA and DDS: Combining architectural styles for the industrial internet,” 2016 IEEE World Conference on Factory Communication Systems (WFCS), Aveiro, 2016, pp. 1-7. doi: 10.1109/WFCS.2016.7496515
  • G. Pardo-Castellote, “OMG Data-Distribution Service: architectural overview,” 23rd International Conference on Distributed Computing Systems Workshops, 2003. Proceedings., 2003, pp. 200-206. doi: 10.1109/ICDCSW.2003.1203555
  • D. C. Schmidt and H. van’t Hag, “Addressing the challenges of mission-critical information management in next-generation net-centric pub/sub systems with OpenSplice DDS,” 2008 IEEE International Symposium on Parallel and Distributed Processing, Miami, FL, 2008, pp. 1-8. doi: 10.1109/IPDPS.2008.4536567
  • F. Palm, S. Grüner, J. Pfrommer, M. Graube and L. Urbas, “Open source as enabler for OPC UA in industrial automation,” 2015 IEEE 20th Conference on Emerging Technologies & Factory Automation (ETFA), Luxembourg, 2015, pp. 1-6. doi: 10.1109/ETFA.2015.7301562